BESTCARE INTERNAL MEDICINE, PLLC
NPI 1679706923
Internal Medicine in Surprise, AZ

Q: What is Bestcare Internal Medicine, PLLC's NPI number?

The NPI number for Bestcare Internal Medicine, PLLC is 1679706923. It was assigned to this organization in the NPPES registry on September 2, 2009.

Q: What is Bestcare Internal Medicine, PLLC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since September 02, 2009CLIA 03D2007860 · Waiver

13945 W GRAND AVE, SUITE A-105, SURPRISE, AZ 85374(623) 546-0007(623) 584-6915 Get Directions Write a Review

NPPES record last updated: November 26, 2013. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Bestcare Internal Medicine, Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

BESTCARE INTERNAL MEDICINE, PLLC (NPI 1679706923) is a healthcare organization registered as an internal medicine in Surprise, Arizona and active in the NPI registry since September 2009. The organization holds a CLIA Waiver certificate valid through May 26, 2028 and lists Barbara Karolina Bialowolska-romaniuk, Physician/owner, as its authorized official.

NPPES Registry Identity

NPI1679706923

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameBESTCARE INTERNAL MEDICINE, PLLC

Location Address13945 W GRAND AVE, SUITE A-105Surprise, AZ 85374-2437

Mailing Address9832 W Eagle Talon TrlPeoria, AZ 85383-2926

Phone(623) 546-0007

Fax(623) 584-6915

Organization SubpartNo

Authorized OfficialBarbara Karolina Bialowolska-romaniukPhysician/owner · (623) 546-0007

Enumeration DateSeptember 2, 2009

Last NPPES UpdateNovember 26, 2013

✔ NPI 1679706923 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in AZ · 35602

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

13945 W GRAND AVE, Surprise, AZ 85374

Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health, Imperial Insurance Companies, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Bestcare Internal Medicine, Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 3 clinicians reassign Medicare billing to Bestcare Internal Medicine, PLLC, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (3)

Barbara Bialowolska Romaniuk, M.D.

Internal Medicine

NPI 1114946621

13945 W GRAND AVE SUITE A-105
Surprise, AZ 85374

(623) 546-0007

✔ PECOS✔ Accepts MedicareSame address

Catherine Krings, MSN,FNP

Nurse Practitioner

NPI 1053628925

13945 W GRAND AVE STE A-105
Surprise, AZ 85374

(623) 546-0007

✔ PECOS✔ Accepts MedicareSame address

Izabela Musial, MD

Family Practice

NPI 1659313070

20823 N CAVE CREEK RD STE 103
Phoenix, AZ 85024

(602) 578-6442

✔ PECOS✔ Accepts Medicare19 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 03D2007860

Bestcare Internal Medicine · Surprise, AZ

Active · expires May 26, 2028

CLIA Number03D2007860

Laboratory TypePhysician Office

Certificate Effective DateMay 27, 2026

Certificate Expiration DateMay 26, 2028

Laboratory DirectorMarek Romaniuk

Laboratory Phone(623) 546-0007

Laboratory LocationBestcare Internal Medicine13945 W Grand Ave Ste A-105, Surprise, AZ 85374

CLIA data matches this NPI record on: Address Name Phone

This certificate is issued to a laboratory to perform only waived tests.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Bestcare Internal Medicine, PLLC's NPI number?

The NPI number for Bestcare Internal Medicine, PLLC is 1679706923. It was assigned to this organization in the NPPES registry on September 2, 2009.

Where is Bestcare Internal Medicine, PLLC located?

Bestcare Internal Medicine, PLLC is located at 13945 W Grand Ave Suite A-105, Surprise, AZ 85374. The listed phone number is (623) 546-0007.

What is Bestcare Internal Medicine, PLLC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Bestcare Internal Medicine, PLLC enrolled in Medicare?

Yes. Bestcare Internal Medicine, PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Bestcare Internal Medicine, PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Bestcare Internal Medicine, PLLC, in Family Practice, Internal Medicine and Nurse Practitioner. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Bestcare Internal Medicine, PLLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 03D2007860) is associated with this NPI, valid through May 26, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Bestcare Internal Medicine, PLLC accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health and Imperial Insurance Companies, Inc. list Bestcare Internal Medicine, PLLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Bestcare Internal Medicine, PLLC was last updated on November 26, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.